无法运行 rails 服务器：`require'：无法加载此类文件 -- net/ssh (LoadError)答案

【问题标题】：Unable to run rails server: `require': cannot load such file -- net/ssh (LoadError)无法运行 rails 服务器：`require'：无法加载此类文件 -- net/ssh (LoadError)
【发布时间】：2015-11-17 17:44:12
【问题描述】：

我正在尝试使用 michael hartl 指南学习 ruby on rails。过去，我能够完成一个新的 rails webapp 的设置。现在，当我尝试运行服务器时，我收到了这个错误：

/home/ss/.rvm/gems/ruby-2.2.2/gems/fog-1.26.0/lib/fog/joyent/compute.rb:3:in `require': cannot load such file -- net/ssh (LoadError)
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/fog-1.26.0/lib/fog/joyent/compute.rb:3:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/fog-1.26.0/lib/fog/joyent.rb:1:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/fog-1.26.0/lib/fog/joyent.rb:1:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/fog-1.26.0/lib/fog.rb:41:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/fog-1.26.0/lib/fog.rb:41:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/carrierwave-0.10.0/lib/carrierwave/storage/fog.rb:3:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/carrierwave-0.10.0/lib/carrierwave/storage/fog.rb:3:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/carrierwave-0.10.0/lib/carrierwave/storage.rb:9:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/carrierwave-0.10.0/lib/carrierwave/storage.rb:9:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/carrierwave-0.10.0/lib/carrierwave.rb:78:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/carrierwave-0.10.0/lib/carrierwave.rb:78:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/bundler-1.10.6/lib/bundler/runtime.rb:76:in `block (2 levels) in require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `each'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/bundler-1.10.6/lib/bundler/runtime.rb:72:in `block in require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `each'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/bundler-1.10.6/lib/bundler/runtime.rb:61:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/bundler-1.10.6/lib/bundler.rb:134:in `require'
    from /home/ss/workspace/hartl/sample_app/config/application.rb:7:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:78:in `require'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:78:in `block in server'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:75:in `tap'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:75:in `server'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/railties-4.2.2/lib/rails/commands/commands_tasks.rb:39:in `run_command!'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/railties-4.2.2/lib/rails/commands.rb:17:in `<top (required)>'
    from /home/ss/workspace/hartl/sample_app/bin/rails:10:in `require'
    from /home/ss/workspace/hartl/sample_app/bin/rails:10:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/spring-1.1.3/lib/spring/client/rails.rb:27:in `load'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/spring-1.1.3/lib/spring/client/rails.rb:27:in `call'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/spring-1.1.3/lib/spring/client/command.rb:7:in `call'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/spring-1.1.3/lib/spring/client.rb:26:in `run'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/spring-1.1.3/bin/spring:48:in `<top (required)>'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:in `load'
    from /home/ss/.rvm/gems/ruby-2.2.2/gems/spring-1.1.3/lib/spring/binstub.rb:11:in `<top (required)>'
    from /home/ss/workspace/hartl/sample_app/bin/spring:13:in `require'
    from /home/ss/workspace/hartl/sample_app/bin/spring:13:in `<top (required)>'
    from bin/rails:4:in `load'
    from bin/rails:4:in `<main>'

【问题讨论】：

嗨，Shenil，我对 ruby 了解不多，但您的问题的格式并不正确，请参阅 stackoverflow.com/editing-help。这可能会增加您从了解 ruby 的人那里获得帮助的机会

标签： ruby-on-rails terminal server railstutorial.org

【解决方案1】：

或者，将其添加到您的 Gemfile：

gem 'fog', '~> 1.36.0'

然后运行bundle install。这对我有用，因为我遇到了1.35.0 中引入的错误：https://github.com/fog/fog/issues/3765

【讨论】：

【解决方案2】：

将此添加到您的 Gemfile：

gem 'net-ssh'

然后运行bundle install。

【讨论】：